Shell adapter for shotgun



FIG. 1 is a front perspective view of a shell adapter for shotgun, showing our new design;

FIG. 2 is a backside perspective view thereof;

FIG. 3 is a top elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a front side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a backside elevational view thereof;

FIG. 8 is a bottom elevational view thereof; and,

FIG. 9 is a cross sectional view of FIG. 8. 

CLAIM The ornamental design for a shell adapter for shotgun, as shown and described. 